Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If 10x − 5y = 30 and 2x − y = t are inconsistent, what is the correct condition on t?

Answer and explanation

Correct answer: t ≠ 6

For a pair of linear equations a₁x + b₁y + c₁ = 0 and a₂x + b₂y + c₂ = 0, the equations are inconsistent when a₁/a₂ = b₁/b₂ but c₁/c₂ is different. Here, 10x − 5y = 30 can be compared with 2x − y = t. The coefficient ratios are 10/2 = 5 and (−5)/(−1) = 5, so the two lines have the same slope. They will be distinct parallel lines, and hence have no solution, only when 30/t ≠ 5, which is equivalent to t ≠ 6. If t = 6, the second equation multiplied by 5 becomes the first, giving infinitely many solutions rather than inconsistency. Therefore option B is correct; the other numerical values do not express the required condition.

Related tags

Linear EquationsInconsistent PairConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematicsClass 10 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.